Switch.



0.10. STIRLNG.

SWTCH,

APPLICATION FlED1UNE22. 191?.

Patented Apr. 2, 1918.

UNITED STATES PATENT OFFICE.

CLARENCE STIRLING, OF HARTFORD, CONNECTICUT. ASSIGNOR T0 THE I-IAR'IV HEGEMAN MANUFACTURING COMPANY BA'IIIOIll OF CONNECTICUT.

, OF HARTFORD, CONNECTICUT, A CORPO- SWITCH.

Application led June 22, 1917. Serial No. 176,301.

To all whom it may concern.:

Be it known that I, CLARENCE (l. Srin- LING, n citizen of the United States, residing at, Hartford, in the county ol' Hartford and Stato of Connecticut, have invented certain ne`y` and useful Improvements in Switches, of which the following is n specification.

This invention relates to switches, theY object of the invention being to provide n n nppurtenanoe of this character which is simple in construction, susceptible 0f mexpensive manufacture und which can be rap idly moved to the on and the oil' positions.

v In the drawings accoinpanyng und form0 ing part of the present speciiicntion I have shown one form of embodiment of the invention which will be fully set forth in thc following description. I do not limit myself to this particular disclosure; l may dcpart therefrom in several respects within the scope of the invention defined by the claims following said descriptioi'i.

lefcrring to said drawings:

Figure 1 is n vertical sectional view ofa switch involving the invention..

Fig. 2 is a transverse section ol' the same.

Fig. 3 is a horizontal sectionnl top plan view, the section being taken on the line 5-5 of Fig. 1, looking in the direction of thc arrows.

Like. characters refer to throughout the several views.

The device involves in its make-up n body as 2 which may be made from any of the insulating substances nonv in customary use. This body is inclosed by thc raising or housing 3 gelilnllv of sheet metal, the sell-tions of which may be removably united by a suitable joint as familiar. There may be it dcsired interposed between the body Q und casing or housing 3 an insulating lining 2 as usual in this type of article. ln the upper -on of the casing is a bushing as l of iii-- snlnting materiel through which a suspend i nn' cord made of insulated wires 5, may ex lend. These wires Within the casing 3 are harcd and connected with screws 6, the heads of which are fitted in a channel 7 extcrior of the insulating body 2, the Shanks of the screws freely extending through perfor-ations in said body and being in threaded connection with contacts as 8, the outer faces ol' which are conformed to the inner surface of the chamber 9 of the body 2, which chamber receives in addition to said two'contaots like parts certain cooperating douces hereinafter' described. The two coniacls 8 as shown are disposed :it opposite sides of the lin 1() which may be in one piece with the insulating body 2. When these contacts 8 are eleotricall bridged. il is 'clear that the circuit, is close The contacter or circuit controlling merri-y bcr is in the form of a, roller 11 which yvirtually floats and which moves between the 'two contacts 8 which it bridges when the stood the contacter or circuit controlling" member 1 1 consists of a metal roller through the central opening 14 of which the coiledT spring 15 extfuidsthe spring being virtually ol inverted U-form. Its terminals are pros" vided `with eyes 16, which receive the trans' versely :dined screws 17 threaded into the bottom of the chanlber or cavity 9. transverse line which passes through 1these two screws is practically midway of `th'epro Patented Apr. 2, 1918.

The

jections i() und 12. This coiled spring is oonstantlv under tension and holds `theY contactor 11 tirinl)r against the two contacts. lVhcn the anti-friction roller 11 is in its on and ntl' lfiositiow and :d when between said positions :is best illustrated in4 Fig. 1, it is slightly spaced or separated from the actuator 1 3. Said actuator 13 is shown as havin;r u circunilcrential projection 1G directly coperative with the roller 11 as will hereinafter appear. This projection is made rigid with the actuator 13 in some suitable way; as shown it has united with it a l'lange 17', the loi-ver part of the projection and the flange 17 being disposed in the counterbore 18 which extends below the chamber or cavity 9. The ends of the flange 17 when the switrhing member is on and oil' respectively engage the `wall of thecounterbore 18 and thus mintain the actuator i3 at all times in proper relation.

The roller 11 is shown ns being inthe oil(y position by full lines in Fig. 1, resting against the stop 12. The full lines in this view also show the actuator 13 in the correspending position. It will be assumed that it is desired to close the circuit overned by the switch. In this event the t'oowing pro cedere may be adopted: The actuator 13 will be thrust to the left in Fig. 1 to effect its movement from the full line to the dotted line position in suid view. The projection 1G' by riding ugninst the periphery of the roller ll will move under said roller and will lift it und cause the roller to traverse the inner falce of the stop l2, the motion c0ntinuing until the projection 16 passes from under the roller when the roller is ut, once movlnl to the on position by the power of the spring 15. To open the circuit, the ection described will be reversed, The ect of movin the actuator also increases the tension o the spring Just at the moment of make or break, when quickness of movement is require-d.

What I claim is:

1. An electric switch comprising an anti friction roller constituting a contacter, combined with a coiled springextending through the opening of the roller and tending constantly to move the sinne, and means for relcasably holding the roller against. movement.

2. An electric switch comprising a con` tactor having an opening, combined with spring means extendingr through the opening und tending constantly to move the contacbor, and ineens for releasubly holding the contacter against movement.

3. An anti-friction roller constituting a. contacter combined with a coiled spring extending through the openingof the roller and tendin constantly to move the same, and manual y operable means for releasably holding the roller against movement.

4. An electric switch comprising a contacter combined with a coiled spring approximatcly in U-form acting between its ends against the vontnctor slnntly to more the same, leusnbly holdingr the ment.

An :inti-l'iivlion roller constituting a. eontnctor eonihined with :l coiled spring ex tending through llnl opening ot' the. roller, the termin-nis ol' the spring being fixed and the spring tending constantly to move the roller.y and mnnuullil operable menus for releusnbly holding the roller agninst. move.` meut.

(j. .\n elertrir switch comprising n con- !:n'tor huvin,; r :in opening, combined with means extending.,r through the opening und :beting constantly to nio\e the eoutnetor` und means for relensutily holding seid contuctor against movement.

7. A contuetor having :in opening eombined with it coiled spring extending through seid opening. the ends ot the spring being fixed and the spring tending constnntly to move the eoutnetor. and n manually cons trolled actuator provided with a projection lo engage the outuetoi to eziuse the sume on opposite endwise movements of the actuator, to move between on and oit' positions.

8. An untifriction roller constituting a contacter combined with n coiled spring eX- tending freely through the opening of the roller to thus permit the lutter to float, the enih of the spring being fixed and the spring tending constantly to move the roller, and a reciprocatory actuator provided with a projection to engage the roller to effect on and ntl' movements thereotI on opposite endwise movements of the actuator.

ln testimony whereof I affix my signature in the presence of two witnesses.

. CLARENCE C. STIRLING.

Witnesses:

L. L. Mmmm.. HEATH SUTnHiLANo.

and tending conand menus tor recontacter against move- 

